scholarly journals Main features of modeling terrigenous deposits in East-Siberia using the example of the Hamakinsky horizon

2021 ◽  
Vol 6 (4) ◽  
pp. 32-42
Author(s):  
Dmitriy V. Kozikov ◽  
Mikhail A. Vasiliev ◽  
Konstantin V. Zverev ◽  
Andrei N. Lanin ◽  
Shafkat A. Nigamatov ◽  
...  
Keyword(s):  
Pilot Project ◽  
Business Case ◽  
Geological Model ◽  
Delta Front ◽  
Production Forecast ◽  
Gas Field ◽  
Oil Reserves ◽  
The Core ◽  
Petrophysical Model ◽  
Thin Section Analysis

Background. The article considers the results of updating the geological model of the khamakinskii horizon reservoirs of the Chayandinskoe oid and gas field. The main aim is project the production of the oil rims and form a positive business case of the project. Materials and methods. Conceptual sedimentary model bases on the core of the 14 wells. Updating of the petrophysical model is the key to identify post-sedimentary transformations (like anhydritization and halitization) and the opportunity to correct the permeability trend. The tectonic pattern of the horizon based on the interpretation of 3D seismic data. There are two groups of faults were identified: certain and possible. Neural networks algorithm uses for a creating the predictive maps of anhydritization, which are used in the geological model. Results. Estuary sands influenced by fluvial and tidal processes dominate the khamakinskii horizon. The reservoir is irregular vertically: at the base of the horizon, there are sandstones of the delta front and there are alluvial valley with fluvial channels in the middle and upper parts. Eustary sands eroded by incised valleys (alluvial channels). According to the core and thin section analysis, the main uncertainty is sedimentary transformations of reservoir. It affects the net thickness and then the volume of oil in productive wells. 3D geological model includes the trends of anhydritization and halitization over the area, which makes it possible to obtain a more accurate production forecast. Conclusion. As part of the probability estimate of oil reserves, the main geological parameters that affect the volume of reserves were identified. Pilot project is planning to remove geological and technical uncertainties.

scholarly journals LOWER MIOCENE RESERVOIRS STRUCTURE AND DEPOSITIONAL ENVIRONMENTS OF THE CENTRAL PART OF DRAGON OILFIELD (VIETNAM)

2015 ◽  
pp. 40-45
Author(s):  
E. V. Frolova
Keyword(s):  
Oil Recovery ◽  
Central Area ◽  
Seismic Interpretation ◽  
Depositional Environments ◽  
Core Analysis ◽  
Geological Model ◽  
Lower Miocene ◽  
Oil Reserves ◽  
The Core ◽  
Wireline Logs

The paper presents the results of the study of the structure and depositional environments formation in the lower Miocene reservoirs in the Central area of Dragon field (Cuu Long basin, Vietnam offshore) based on litho-facial, electro-facial, seismic-facial analyses, and biostratigraphy data and the deposits thickness analysis. The geological model refining had been done through the core analysis, seismic interpretation, wireline logs integration and via defi-nition of the depositional environments. The results received permit to predict the depositional environments distribu-tion in the areas that were not identified by drilling, to make more exact the area oil reserves evaluation, to enhance the oil recovery.

The Amethyst Field, Blocks 47/8a, 47/9a, 47/13a, 47/14a, 47,15a, UK North Sea

1991 ◽  
Vol 14 (1) ◽  
pp. 387-393 ◽  
Author(s):  
C. R. Garland
Keyword(s):  
North Sea ◽  
Reservoir Quality ◽  
Geological Model ◽  
Gas Field ◽  
Seismic Parameters ◽  
Recoverable Reserves ◽  
High Production ◽  
Sandstone Formation ◽  
Phased Development ◽  
Overlying Strata

AbstractThe Amethyst gas field was discovered in 1970 by well 47/13-1. Subsequently it was appraised and delineated by 17 wells. It consists of at least five accumulations with modest vertical relief, the reservoir being thin aeolian and fluviatile sandstones of the Lower Leman Sandstone Formation. Reservoir quality varies from poor to good, high production rates being attained from the aeolian sandstones. Seismic interpretation has involved, in addition to conventional methods, the mapping of several seismic parameters, and a geological model for the velocity distribution in overlying strata.Gas in place is currently estimated at 1100 BCF, with recoverable reserves of 844 BCF. The phased development plan envisages 20 development wells drilled from four platforms, and first gas from the 'A' platforms was delivered in October 1990. A unitization agreement is in force between the nine partners, with a technical redetermination of equity scheduled to commence in 1991.

Geological model and optimal well placement substantiation at the western part Tyumen suite layers of Khanty-Mansiysk Autonomous Okrug — Ugra

2021 ◽  
pp. 8-24
Author(s):  
S. R. Bembel ◽  
R. V. Avershin ◽  
R. M. Bembel ◽  
V. I. Kislukhin
Keyword(s):  
Seismic Survey ◽  
Geological Model ◽  
Reservoir Properties ◽  
Well Placement ◽  
Oil Reserves ◽  
Multi Stage ◽  
Reservoir Conditions ◽  
Hydrodynamic Calculations ◽  
Field Information ◽  
Clay Barriers

The middle Jurassic Tyumen sediments have been involved in the development of oil facilities in the territory of the Khanty-Mansiysk Autonomous Okrug — Ugra for the last decade. The Jk2-5 formation is represented by complex interlayering of poorly permeable sandy-aleurite lenses and clay barriers with low reservoir properties. Recoverable oil reserves of the Jk2-5 formation on the Krasnoleninsky arch amounts to several hundred million tons. According to the collector permeability, the reserves of the object are classified as hard-to-recover. There are no effective technologies to involve such reserves in the development now. Standard methods of drilling and operation of inclined wells doesn't allow achieving acceptable oil production rates under these reservoir conditions. Based on the analysis of seismic survey data, correlation of well sections, field information, a geological model of a productive reservoir on the Krasnoleninsky arch was created. The multi-step hydrodynamic calculations made it possible to clarify the parameters of the profile of horizontal wells, the number and configuration of operations for multi-stage hydraulic fracturing. Based on the results of the research, recommendations were developed to well placement, drilling and well operation for specific field areas in order to increase the oil resource development efficiency.

scholarly journals Training in quality improvement for the next generation of psychiatrists

2017 ◽  
Vol 41 (1) ◽  
pp. 45-50 ◽  
Author(s):  
Elizabeth Ewins ◽  
Rob Macpherson ◽  
Geoff van der Linden ◽  
Stephen Arnott
Keyword(s):  
Quality Improvement ◽  
General Practitioner ◽  
National Health Service ◽  
Pilot Project ◽  
First Year ◽  
Psychiatry Training ◽  
Leadership And Management ◽  
The Core ◽  
National Health Service Trust ◽  
Management Experience

SummaryQuality improvement (QI) projects have been shown to positively influence patient care. They provide opportunities for trainees to present and publish their work locally and nationally, and to gain valuable leadership and management experience. We describe a pilot project to engage in QI trainees across a National Health Service trust and a school of psychiatry. After the first year of this programme over half of psychiatry trainees in the school (58% of core trainees and 47% of advanced trainees) are participating in 28 individual QI projects and QI project methodology is to become embedded in the core psychiatry training course. Specialty doctors, consultants, foundation doctors, general practitioner trainees, medical students and the wider multidisciplinary team have all become engaged alongside trainees, working with patients and their families to identify problems to tackle and ideas to test.

scholarly journals Depositional facies model and reservoir characterization of USANI field 1, Niger delta basin, Nigeria

2017 ◽  
Vol 5 (2) ◽  
pp. 57 ◽  
Author(s):  
Godwin Aigbadon ◽  
A.U Okoro ◽  
Chuku Una ◽  
Ocheli Azuka
Keyword(s):  
Tidal Flat ◽  
Water Saturation ◽  
Well Logs ◽  
Physical Analysis ◽  
Well Log ◽  
Delta Front ◽  
Depositional Facies ◽  
Facies Model ◽  
Core Data ◽  
The Core

The 3-D depositional environment was built using seismic data. The depositional facies was used to locate channels with highly theif zones and distribution of various sedimentary facies. The integration core data and the gamma ray log trend from the wells within the studied interval with right boxcar/right bow-shape indicate muddy tidal flat to mixed tidal flat environments. The bell–shaped from the well logs with the core data indicate delta front with mouth bar, the blocky box- car trend from the well logs with the core data indicate tidal point bar with tidal channel fill. The integration of seismic to well log tie display a good tie in the wells across the field. The attribute map from velocity analysis revealed the presence of hydrocarbons in the identified sands (A, B, C, D1, D2, D4, D5). The major faults F1, F2, F3 and F4 with good sealing capacity are responsible for hydrocarbon accumulation in the field. Detailed petro physical analysis of well log data showed that the studied interval are characterized by sand-shale inter-beds. Eight reservoirs were mapped at depth intervals of 2886m to 3533m with their thicknesses ranging from 12m to 407m. Also the Analysis of the petrophysical results showed that porosity of the reservoirs range from 14% to 28 %; permeability range from 245.70 md to 454.7md; water saturation values from 21.65% to 54.50% and hydrocarbon saturation values from 45.50% to 78.50 %. The by-passed hydrocarbons were identified and estimated in low resistivity pay sands D1, D2 at depth of 2884m – 2940m, sand D5 at depth of 3114m – 3126m respectively. The model serve as a basis for establishing facies model in the field.

The Old Red Sandstone of Eastern Ekmanfjorden, Vestspitsbergen

1960 ◽  
Vol 97 (1) ◽  
pp. 18-32 ◽  
Author(s):  
D. L. Dineley
Keyword(s):  
Delta Front ◽  
Red Sandstone ◽  
The Core ◽  
Sedimentary Structures

AbstractThe Lower Old Red Sandstone deposits of Ekmanfjorden belong mainly to the Lykta Division, but pale sandstones with Giganthaspis representingthe Kapp Kjeldsen Division also occur in the core of what is probably a N.-S. striking anticline. The lower beds of the Lykta Division are soft, dull and silty and not very fossiliferous; above them are some 1,100 feet of sandstones and conglomeratic beds alternatingwith shales or marls. Locally abundant vertebrate remains include the guide fossil Doryaspis. Various sedimentary structures suggest rapid deposition on a broad shallow delta front.

Sign in / Sign up

Export Citation Format

Share Document